In a Rotorua Daily Post article last Wednesday, the council's chief operating officer Dave Foster said the council had spent $5000 on legal advice after one official complaint and "a number of inquiries" from the public asking if the signs were legal.
The advice was some of the signs did not comply with the rules under the District Plan, he said.
He said there were two types of signs - temporary signs advertising things such as community events, galas and concerts, that were allowed to be up for six weeks. The other was permanent signs which are governed by a number of different bylaws.
Mr Foster said the council would not be heavy handed and would give property owners plenty of time to digest the information.
He said if owners did not comply they would be sent an abatement notice under the District Plan.
Dr Macpherson said they had every right to put the signs up around town and would not stop asking questions of the council.
"My advice to the mayor and council is they should get used to receiving feedback they don't like."
A Rotorua Lakes Council spokeswoman said yesterday they were unaware of any staff members visiting or taking down the signs, but were aware letters had been sent to property owners housing these signs.